[Effect of hydrogenated ergot alkaloids on cerebral metabolism of the patients with neurological deficits after subarachnoid hemorrhage (author's transl)].

Cerebral blood flow and metabolism were measured in 9 patients with neurological deficits after subarachnoid hemorrhage using the 133Xe intra carotid injection methods. Regional cerebral blood flow (r-CBF) values were calculated with initial slope method (2 minutes flow index), their values were compared with the blood flow response to arterial PCO2 and to administration of hydrogenated ergot alkaloids (HEA). In case of repeated examination after short interval CBF values were corrected using the rate of reproducibility. The content of oxygen, glucose, lactate, and pyruvate in the arterial and the internal jugular blood were measured , and CMRO2, CMR glucose, CMR lactate, values were calculated: 1st step: The measurement of r-CBF was performed immediately after the infusion of 1.5 mg HEA for 15 minutes. The focal ischemic lesions decreased, mean CBF value increased by 8% significantly, arterio-venous difference of oxygen value increased by 20% significantly and CMRO2 value increased by 26% significantly after HEA administration. 2nd step: 1.8 mg HEA was infused for one week. EEG findings were improved after administration of HEA. The pressure and the lactate levels of cerebrospinal fluid decreased, but the effect of HEA must be carefully distinguished from natural recovery. Administration of HEA increased the CMRO2 values and consequently increased the mean CBF values.